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单词 peneplain
释义

Definition of peneplain in English:

peneplain

noun ˈpiːnɪpleɪnˈpinəˌpleɪn
Geology
  • A more or less level land surface produced by erosion over a long period, undisturbed by crustal movement.

    〔地质〕准平原

    Example sentencesExamples
    • The south slope is generally planar except where incised by glacial or fluvial valleys and is a remnant peneplain of late Cretaceous-early Tertiary age, which is well developed in western Mongolia and adjacent regions of China.
    • Here the sequence of processes and landforms which exists between the tectonic uplift of an area and its reduction to a peneplain or erosion surface close to base level is believed to have occurred many times in certain regions.
    • Possibly this was the time of exhumation of the Augenstein peneplain in the Northern Calcareous Alps, formed during Priabonian-Early Kiscellian time.
    • It occupies the high-lying peneplain between South Africa and Swaziland, and borders against the low-lying, older greenstone terrane in the north along a prominent, 500-700 m high escarpment.
    • the Palaeozoic Urals were eroded down to a peneplain by the end of Jurassic time, with platform sediments covering most of the orogen.

Origin

Late 19th century: from Latin paene 'almost' + plain1.

Definition of peneplain in US English:

peneplain

(also peneplane)
nounˈpinəˌpleɪnˈpēnəˌplān
Geology
  • A more or less level land surface produced by erosion over a long period, undisturbed by crustal movement.

    〔地质〕准平原

    Example sentencesExamples
    • Here the sequence of processes and landforms which exists between the tectonic uplift of an area and its reduction to a peneplain or erosion surface close to base level is believed to have occurred many times in certain regions.
    • The south slope is generally planar except where incised by glacial or fluvial valleys and is a remnant peneplain of late Cretaceous-early Tertiary age, which is well developed in western Mongolia and adjacent regions of China.
    • Possibly this was the time of exhumation of the Augenstein peneplain in the Northern Calcareous Alps, formed during Priabonian-Early Kiscellian time.
    • the Palaeozoic Urals were eroded down to a peneplain by the end of Jurassic time, with platform sediments covering most of the orogen.
    • It occupies the high-lying peneplain between South Africa and Swaziland, and borders against the low-lying, older greenstone terrane in the north along a prominent, 500-700 m high escarpment.

Origin

Late 19th century: from Latin paene ‘almost’ + plain.

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更新时间:2024/12/27 19:32:36